/* 声明全局样式和项目的初始化样式 */
body, h1, h2, h3, h4, p, table, tr, td, ul, li, a, form, input, select, option, textarea {
    margin: 0;
    padding: 0;
    font-size: 15px;
}

a {
    text-decoration: none;
    color: #333;
    cursor: pointer;
}

ul, li {
    list-style: none;
}

table {
    border-collapse: collapse; /* 合并边框 */
}

img {
    max-width: 100%;
    max-height: 100%;
}

input {
    outline: none;
}